Loose-leaf binder.



R. C. DAVID.

LOOSE LEAP BINDER.

APPLICATION FILED JULY 25, 1912.

Patented Jan. 21, 1913.

wlTNEssEs rrnn sra'rns Parana on REESE C. DAVID, 0F PITTSBURGH, PENNSYLVANIA, ASSIGNOR TO REPUBLIC BANK NOTE COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPQRATION 0F PENNSYL- VANIA.

LOOSE-LEAF BINDER.

Patented J an. 21, 1913.

Application filed July 25, 1912. Serial No. 711,474.

To aZZ whom t may concern:

Be it known that I, Rnnsn C. DAVID, a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania,.have invented a new and useful. Improvement in Loose-Leaf Binders, of which the following is a full, clear, and exact description, reference being had to theaccom'panying drawings, formingvpart of this specification, in whichl -Figure 1 is a perspective view of a binder embodying my invention with the vcover opened anda portion of the leaves broken away;l Fig. 2 isa detail sectional view of the binder; Fig. 3 is al detail sectional view showing how the leaves may be clamped to the post for transfer; Figs. 4 and- 5 are detail perspective views; Fig. 6 is a sectional view of the upper portion of the sleeve member; Fig. 7 is a perspective view of vone of the slides; Fig. 8 is a perspective view of a portionof the guide with a slide therein; Fig.l 9 is a detail sectional' view showing one manner of securing the guide tov the cover; Fig. 10 is a perspective view of a modified form of cover; and Fig. 11 is a detail view of aform of post and clamping Vscrew which may be used with the cover shown in Fig. 10.

My invention has relation to loose leaf binders, and is designed to provide a binder of this character which is simple in its construction and operation, which will enable the leaves to be bound firmly in place, and

which will permit of the ready removal ofl the book of leaves at any time for transfer purposes.

The nature of my invention will be best understood by reference to the accompanying drawings, in which I have shown the preferred embodiment thereof and which will now be described, it being premised, however, that thexinvention is susceptible of various changesin the details of construction and arrangement of the parts within the scope of the appended claims.

In these drawings, the numeral 2 designates the usual cover having the fieXible back port-ion 3. Secured to one leaf of the cover is a metallic guide 4 having therein adovetailed or undercut slideway 5. The guide member 4 may be conveniently formed of metal and can be secured to the back 2 in any suitable manner, as by riveting, or

open end of the slideway may also be pro-I vided with a guard rib 9, which will prevent the slide blocks from falling out, although they can be readily inserted over this rib.

Any desired number of the slide blocks 8 may be employed, according to the number of posts which it is desired to use. In the present instance, I have -shown two of these blocks. Their edges are beveled or otherwise shaped, as indicated at 8a, so as to fit the` undercut portions of the slideway in which they are adapted to be freely moved when released. Each of these blocks is formed with a threaded opening 10, to receive a clamping screw 11. Preferably, the orifice of theV opening 10 is beveled, so as to properly center and guide the screw, as it is inserted.

The numeral 12 designates the binding posts Avwhich consist of tubular sleeves or thimbles having outwardly turned flanges 13 at their lower ends, and preferably having each an inwardly turned flange 14 at its upper end.' The flange 14 1s slotted at 15, for the purpose hereinafter described. v

In the use of the device, the slide blocks 8 are set at the proper distance apart in the slideway of the guidamember to suit the particular punching of the leaves. The posts 12 are then placed thereon, their lower anges 13 resting upon the top of the'rguide member. inserted through the posts and are screwed down through the slide blocks, thus securing the latter rmly in place. The upper ends of the binding screws are provided with the fiat heads 11a, between which and the lower flanges 13 of the post the sheets or leaves are securely clamped. When it is desired to remove the set of leaves for transfer pur, poses, the screws 11 are removed and a .top clamp 14a, such as is shown in detail in Figs. 3 and 5, is engaged with the upper end of each post. These-top` clamping members are of button-like form wit-h a dependlng stud 14", having a projecting lug 14C, adapted to engage the notch or slot 15, before described.

The binding screws 11 are then The under surface of the inturned flange 14 of the .post is preferably inclined or cammed adjacent to the slot 15, as indicated at 16 in Fig. 6. When the stud 14h is inserted in the upper end of the post and the clamp member slightly rotated, this cam surface will act upon the lug 14 to draw the clamping member downwardly into clampingengagement withthe top leaf. The entire set of leaves securely bound in this manner can then be removed as a unit. y

When the device is desired to be used with a set of leaves of too great thickness to be conveniently contained within a flexible cover, such as shown in Fig. 1, the flexible backing and the top leaf of the cover may be omitted and a separate top cover provided, such as shown at 17 in Fig. 10.

'. This cover 17 is provided at one edgewith punching. Any ,desired number of posts' elongated slot 18, closed at its ends and adapted to receive the upper portions of the posts therethrough. With this form of cover, a long post 19 and lo-ng binding screw 20 may be employed of the general form shown in Fig. 11.

The advantages of my invention will be apparent to those familiar with this art, since 1t provides a very simple and-effective form of binder in which the posts can be readily adjusted to suit any desired spa-- ing of leaf punchings. The binder is therefore not limited in use to any standard dovetailed guideway therein, slides normally loosely mounted in the slideway, flanged tubular posts removably -seated upon the top of the guideway, and binding screws eX tending downwardly through the posts and engaging the slides to clamp them in the slideway, substantially as described.

3. In a loose leaf binder, a cover member having a slidewa-y secured thereto, a tubular post having a bottom flange adapted to seat upon the top of the slideway, a slide adapted to move within the slideway, and a headed binding screw which passes down.- wardly through the tubular post and engages the slide, substantially as described.

4., A loose-leaf binder, comprising a slideway, a slide member movable therein, a tubular post formed with a flange at its lower end, and ,clamping means adapted to clamp the loose leaves against said flange and to also clamp the slide member in its adjusted position in the slideway; substantially as described.

5. A loose leaf binder having a guideway, /slide members movable in. the guideway, posts detachably mounted on the guideway, means for normally securing the posts and slides in fixed position, and rother means for securing the sheets on the posts when the .latterare removed from the guideway,^sub stantially as described.. y In testimony whereof, I have hereunto set my hand.

REESE C'. DAVID. Witnesses:

GEO. H..PARMELEE,

A. F. TIBBETTS. 

